I was a few hours ahead of you - got there at 5:30pm. Same situation, although I didn't see any Avalons. I managed to find an Impala LTZ with leather seating and a sunroof, albeit with expired XM even with only 2800 miles on it. But I was only going to drive the car for about 2 hours of the next 24, so I didn't really care about the XM.